魔幻般冒泡背景的CSS3按钮动画

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这是一款非常有特点的CSS3按钮，按钮的背景不是北京图片，也不是单纯的颜色，而是一组魔幻般的冒泡背景动画。当我们将鼠标滑过按钮时，按钮的冒泡背景动画就可以展示出来。可以说这款CSS3按钮的设计风格相当有创意，而且令人惊叹的是，这些动画都是用CSS3实现的，并没有使用JavaScript，非常强大。

在线演示源码下载

HTML代码：

<div id="buttonContainer">

    <a href="#" class="button big blue">Big Button</a>
    <a href="#" class="button big green">Big Button</a>
    <a href="#" class="button big orange">Big Button</a>
    <a href="#" class="button big gray">Big Button</a>

    <a href="#" class="button blue medium">Medium Button</a>
    <a href="#" class="button green medium">Medium Button</a>
    <a href="#" class="button orange medium">Medium Button</a>
    <a href="#" class="button gray medium">Medium Button</a>

    <a href="#" class="button small blue">Small Button</a>
    <a href="#" class="button small green">Small Button</a>
    <a href="#" class="button small blue rounded">Rounded</a>

    <a href="#" class="button small orange">Small Button</a>
    <a href="#" class="button small gray">Small Button</a>

    <a href="#" class="button small green rounded">Rounded</a>

</div>

CSS代码：

.button{
	font:15px Calibri, Arial, sans-serif;

	/* A semi-transparent text shadow */
	text-shadow:1px 1px 0 rgba(255,255,255,0.4);

	/* Overriding the default underline styling of the links */
	text-decoration:none !important;
	white-space:nowrap;

	display:inline-block;
	vertical-align:baseline;
	position:relative;
	cursor:pointer;
	padding:10px 20px;

	background-repeat:no-repeat;

	/* The following two rules are fallbacks, in case
	   the browser does not support multiple backgrounds. */

	background-position:bottom left;
	background-image:url('button_bg.png');

	/* Multiple backgrounds version. The background images
	   are defined individually in color classes */

	background-position:bottom left, top right, 0 0, 0 0;
	background-clip:border-box;

	/* Applying a default border raidus of 8px */

	-moz-border-radius:8px;
	-webkit-border-radius:8px;
	border-radius:8px;

	/* A 1px highlight inside of the button */

	-moz-box-shadow:0 0 1px #fff inset;
	-webkit-box-shadow:0 0 1px #fff inset;
	box-shadow:0 0 1px #fff inset;

	/* Animating the background positions with CSS3 */
	/* Currently works only in Safari/Chrome */

	-webkit-transition:background-position 1s;
	-moz-transition:background-position 1s;
	transition:background-position 1s;
}

.button:hover{

	/* The first rule is a fallback, in case the browser
	   does not support multiple backgrounds
	*/

	background-position:top left;
	background-position:top left, bottom right, 0 0, 0 0;
}

.button:active{
	/* Moving the button 1px to the bottom when clicked */
	bottom:-1px;
}

/* The three buttons sizes */

.button.big		{ font-size:30px;}
.button.medium	{ font-size:18px;}
.button.small	{ font-size:13px;}

/* A more rounded button */

.button.rounded{
	-moz-border-radius:4em;
	-webkit-border-radius:4em;
	border-radius:4em;
}

/* Defining four button colors */

/* BlueButton */

.blue.button{
	color:#0f4b6d !important;

	border:1px solid #84acc3 !important;

	/* A fallback background color */
	background-color: #48b5f2;

	/* Specifying a version with gradients according to */

	background-image:	url('button_bg.png'), url('button_bg.png'),
						-moz-radial-gradient(	center bottom, circle,
												rgba(89,208,244,1) 0,rgba(89,208,244,0) 100px),
						-moz-linear-gradient(#4fbbf7, #3faeeb);

	background-image:	url('button_bg.png'), url('button_bg.png'),
						-webkit-gradient(	radial, 50% 100%, 0, 50% 100%, 100,
											from(rgba(89,208,244,1)), to(rgba(89,208,244,0))),
						-webkit-gradient(linear, 0% 0%, 0% 100%, from(#4fbbf7), to(#3faeeb));
}

.blue.button:hover{
	background-color:#63c7fe;

	background-image:	url('button_bg.png'), url('button_bg.png'),
						-moz-radial-gradient(	center bottom, circle,
												rgba(109,217,250,1) 0,rgba(109,217,250,0) 100px),
						-moz-linear-gradient(#63c7fe, #58bef7);

	background-image:	url('button_bg.png'), url('button_bg.png'),
						-webkit-gradient(	radial, 50% 100%, 0, 50% 100%, 100,
											from(rgba(109,217,250,1)), to(rgba(109,217,250,0))),
						-webkit-gradient(linear, 0% 0%, 0% 100%, from(#63c7fe), to(#58bef7));
}

/* Green Button */

.green.button{
	color:#345903 !important;
	border:1px solid #96a37b !important;	
	background-color: #79be1e;

	background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(162,211,30,1) 0,rgba(162,211,30,0) 100px),-moz-linear-gradient(#82cc27, #74b317);
	background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(162,211,30,1)), to(rgba(162,211,30,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#82cc27), to(#74b317));
}

.green.button:hover{
	background-color:#89d228;

	background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(183,229,45,1) 0,rgba(183,229,45,0) 100px),-moz-linear-gradient(#90de31, #7fc01e);
	background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(183,229,45,1)), to(rgba(183,229,45,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#90de31), to(#7fc01e));
}

/* Orange Button */

.orange.button{
	color:#693e0a !important;
	border:1px solid #bea280 !important;	
	background-color: #e38d27;

	background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(232,189,45,1) 0,rgba(232,189,45,0) 100px),-moz-linear-gradient(#f1982f, #d4821f);
	background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(232,189,45,1)), to(rgba(232,189,45,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#f1982f), to(#d4821f));
}

.orange.button:hover{
	background-color:#ec9732;

	background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(241,192,52,1) 0,rgba(241,192,52,0) 100px),-moz-linear-gradient(#f9a746, #e18f2b);
	background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(241,192,52,1)), to(rgba(241,192,52,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#f9a746), to(#e18f2b));
}

.gray.button{
	color:#525252 !important;
	border:1px solid #a5a5a5 !important;	
	background-color: #a9adb1;

	background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(197,199,202,1) 0,rgba(197,199,202,0) 100px),-moz-linear-gradient(#c5c7ca, #92989c);
	background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(197,199,202,1)), to(rgba(197,199,202,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#c5c7ca), to(#92989c));
}

.gray.button:hover{
	background-color:#b6bbc0;

	background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(202,205,208,1) 0,rgba(202,205,208,0) 100px),-moz-linear-gradient(#d1d3d6, #9fa5a9);
	background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(202,205,208,1)), to(rgba(202,205,208,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#d1d3d6), to(#9fa5a9));
}

在线演示源码下载